Water-tube boiler.



Patented July 30, 190i. G. S. WOLF.

WATER TUBE BOILER.

(Application filed Jan. 15, 190i.)

2 Sheets-Sheet I.

[No Model.)

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a N m u s I. 2 d e n a t a P m Em Fumw M fl s .B nuEm um WM (No Model) nh g UNiTnD STATES PATENT OFFICE.

GEORGE SAAL IVOLF, OF WEST DOVER, OHIO, ASSIGNOR OF THREE- FOURTIIS TONICHOLAS J. BOYLAN, OF CLEVELAND, OIIIO.

WATER-TUBE BOILER.

SPECIFICATION forming part of Letters Patent No. 679,470, dated July 30,1901.

Application filed January 15, 1901. $erial No. 43,436. (No model.)

. novel constructions and combinations whereby simplicity and cheapnessof construction, ease and readiness of repair, and a perfectly naturalcirculation are the results, substantially as hereinafter described, andpointed out in the claims.

In the accompanying drawings, Figure 1 is a front elevation withone-half of the front removed for showing interior construction. Fig. 2is a side elevation with side wall removed for showing interiorconstruction. Fig. 3 is a front elevation, enlarged, of one of the fronttube-headers with the front wall removed for showing interiorconstruction. Fig. a is a transverse vertical section of the same. Fig.6 is a face view of the rear end return-tube connections. Fig. 5 isavertical section of one of said return connections. Fig. 7 is a view ofa removable clean-out sleeve.

A A represent the side and rear walls of the outer casing of the boiler,and A the front, standing on a suit-able foundation-frame A Thefire-front openings and grates may be of the usual construction.

B B are a series of water-tubes horizontally disposed from front to rearand to any required height for a given capacity. These tubes areconnected at the front and rear by means of new andpeculiarlyconstructed coupler-headers. The front header consists ofcoulomb couplers O, having two vertical chambers c c, which unite twovertical rows of alternating tubes B B. In the front wall of saidheaders O are made holes directly 0pposite the ends of the tubes B andare closed by screw-plugs b I). These holes are for the convenience ofgetting into the tubes for cleaning. The sides of the headers O are madealternate swell curves for the purpose of closely assembling them incompact form, as seen in Fig. 1. Each of said coulomb headers couple theupper and lower water-circulating tubes, as shown by arrows a, Fig. I.In the lower end of the partition in said headers is made anarch-opening c to provide a circulating communication between the twochambers. The top of one chamber is provided with connecting-neck c.

D D are return-bend couplers for the rear ends of the tubes, and theyconsist of double tubular blocks connecting two of tubes B B in diagonallines, as shown. Each of said tubular blocks is provided with triangularlugs d d, by means of which they may be assembled one above another forsup port. The front openings in said blocks are closed with screw-plugsE E. The ends of the tubes B B are secured in their seats in the blocksby expanding or beveling their ends, as seen at e e. F, Fig. 7, is asleeve having a screw-thread about its middle, which is to be used inthe said blocks D for clean ing-out purposes. They are to be inserted inthe places of plugs E E, when so used, as seen in Fig. 5.

G is a steam-drum located over the tubes and is connected at the frontend with the headers O O by a cross-header H, as seen in Figs. 1 and 2.Said cross-header H is provided with flanged nipples h h on the underside, by which they are secured by bolts to the necks c" of the headersO O.

I is a large neck on the upper side of the cross-header II for makingconnection with the steam-drum.

J J are curved tubes connecting the under side of the steam-drum withthe upper ends of the headers C O at C. The circulation from thesteam-drum to and through the headers O C and return is represented bythe arrows a K is a mud-drum placed at the back of the furnace andconsiderably below the lower line of water-tubes and is connected by avertical pipe L with the lower back corner of the steam-drum.

' IWI M are water-supply heating-coils.

The top of the boiler is covered with an arch roof R.

P is a draw-off pipe connected with the lower ends of the headers O O byshort branches P.

Having described my invention, what I claim is- 1. In a water-tubeboiler the front headers tion at their bottom, the alternately swell--curved adjoining sides, the tubes B B connected in alternate orderwithsaid header-5 chambers, the return-bend blocks D D connecting'the're'arends of the tubes'in like alternate order, the cross header I-Iconnected to one of the chambers, respectively, with the headers C C,the tubes J J, attached to the second chambers in said headers O O, andthe steam-dome G connected to the crossheader H and the said tubes J J,substantially as shown and described.

3. In combination with the return-bend blocks D D, provided with thesupportinglugsd d and connected with the tubes B B, and having openingsopposite to said tubes closed with removable plugs E E, of theinsertible sleeves F, substantially as and for the purpose set forth.

Signed by me at Cleveland, Ohio, this 10th day of January, 1901.

GEORGE SAAL WOLF. Witnesses:

GEO. W. TIBBITTS, J ESSE A. FENNER.

